﻿using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp1
{
   public  class DbHelper
    {
        public static  DataTable GetDataTable(string sql)

        string conString = "server=.;database=Schools;uid=sa;pwd=123456;";

        SqlConnection connection = new SqlConnection(conString);

        SqlDataAdapter adapter = new SqlDataAdapter(sql, connection);

        connection.Open();

        DataTable dt = new DataTable();

        adapter.Fill(dt);

        return dt;
    }
}
